Here are the exercise routines that keep presidents fit

When President Donald Trump had his first physical as a presidential candidate in December 2015, Dr. Harold Bornstein did not shy away from exaggeration.

"If elected, Mr. Trump, I can state unequivocally, will be the healthiest individual ever elected to the presidency," he said.

In January, Rear Admiral Dr. Ronny Jackson gave Trump another, somewhat more down-to-earth health assessment. Jackson gave the president high marks for cognition, heart strength, and overall health, and recommended Trump reduce his cholesterol, improve his nutrition, and start a workout routine to lose 10 to 15 pounds.

Though Trump does practice healthy habits like refraining from smoking and drinking, he is not a fan of exercise.

"All my friends who work out all the time, they're going for knee replacements, hip replacements — they're a disaster," Trump told The New York Times in 2015.

Trump isn't the only president who didn't like working out, though most were more active than he is. Here's how he stacks up against past occupants of the Oval Office:

President George W. Bush was a leg guy. In his youth, Bush ran the Houston Marathon in well under four hours, and was an avid biker in his later years.

In 2004, Bush tumbled off his mountain bike on mile 16 of 17 at his ranch in Texas. He was wearing a helmet and mouth guard, so he just got a few scrapes and bruises. After the White House doctor fixed him up, Bush finished the course.

President George W. Bush, center, rides his mountain bike with Chinese cyclists and a Secret Service agent on in Beijing, China on Nov. 20, 2005.AP Photo/Charles Dharapak

President Bill Clinton was known for going on long jogs in the morning, often to McDonald's. The White House had a "straggler van" follow behind him to pick up Secret Service agents who couldn't keep up.

President Gerald Ford wasn't too hot on working out, but he did enjoy lounging in the pool he had installed in the White House.

While he played football in school, President John F. Kennedy's back problems kept him from too strenuous of activities while he was in office. He did like to go sailing at the family's summer home in Cape Cod.

President Franklin D. Roosevelt was an avid swimmer, using it to keep his upper body in shape after being paralyzed from the waist down. He worked out in the water at least three times a week.

To stay fit, President Herbert Hoover's physician invented "Hooverball," a sport that involved throwing a medicine ball over a net. This gave Hoover a more diversified fitness routine than other pastimes might have.

Hoover throws out the first ball of a baseball game in Washington, DC in 1931AP

Former President Calvin Coolidge was allergic to real horses, but he kept in shape by riding a mechanical horse instead.

While the story that President William Howard Taft once got stuck in a bathtub is a myth, he did notoriously weigh over 300 pounds. His physical instructor outlined 15 exercises for him to do, including: "Lie flat on the back. Raise chin to chest and then back to floor pushing the arms along the side of the body as you raise the chin. 8 to 15 times."

President Theodore Roosevelt was obsessed with staying in tip-top shape. Not only did he love working out, he also practiced tennis, judo, boxing, polo, and of course, horseback riding.

President John Quincy Adams definitely took fitness seriously. He reportedly walked up to six miles every morning, and used to skinny dip in the Potomac River, once treading water for almost an hour without touching the bottom.